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A285026 Number of nX4 0..1 arrays with the number of 1s horizontally, antidiagonally or vertically adjacent to some 0 one less than the number of 0s adjacent to some 1. 1
2, 26, 442, 6460, 96458, 1449814, 22043878, 336883696, 5171750894, 79634735346, 1229304353554, 19015329654036, 294656614022300, 4573021347213134, 71071712948803680, 1105968089007186270, 17230453143587374712 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A285030.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..207

EXAMPLE

Some solutions for n=4

..0..0..0..1. .0..0..1..1. .0..0..1..0. .1..1..0..0. .1..1..1..0

..0..0..1..1. .1..1..0..1. .1..1..0..1. .0..1..0..0. .0..0..1..1

..0..0..1..0. .1..0..0..0. .0..1..1..0. .0..0..1..0. .0..0..0..0

..0..1..0..0. .0..0..0..0. .0..1..0..0. .1..1..0..1. .0..0..0..0

CROSSREFS

Cf. A285030.

Sequence in context: A126673 A057351 A245999 * A137100 A228411 A216254

Adjacent sequences:  A285023 A285024 A285025 * A285027 A285028 A285029

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 08 2017

STATUS

approved

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Last modified January 28 09:17 EST 2020. Contains 331318 sequences. (Running on oeis4.)